Door for cannery steam-boxes.



No. 643,606. Patented Feb. l3, I900. J. K. BEBBECK.

0008 FOR CANNERY STEAM BOXES.

(Application filed Aug. 10, 1899.) (No Model.) 2 Sheets-Sheet l,

Patented Feb. l3, I900.

J. K. REBBECK.

000R FOR CANNERY STEAM BOXES.

(Application filed Aug. 10, 1899.) (No Model.) 2 Sheets-Sheet 2.

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NITED STATES JAMES K. REBBEOK, OF VICTORIA, CANADA, ASSIGNOR TO THE ALBION IRON WORKS COMPANY, LIMITED, OF SAME PLACE.

DOOR FOR CANNERY STEAM-BOXES.

$PEGIFICATION forming part of Letters Patent No. 643,606, dated February 13, 1900.

Application filed August 10, 1899. Serial No. 726,834. (No modeld 1'0 all whom it may concern;

Be it known that 1, JAMES K. REBBECK, designer, of the city of Victoria, in the district of Vancouver and Province of British Oolumbia, Canada, have invented a certain new and Improved Quick- Opening Door for Cannery Steam Boxes or Retorts, of which the following is a specification.

The object of my invention is to devise a quick-opening door especially adapted for cannery steam boxes or retorts; and it consists, essentially, of a door hinged at its upper side to the steam-box, of readily-disconnected means for clamping the door to its seat, and of counterbalancing-weights suit- -ably connected to the door and adapted to raise it when unclamped to a position at or near the horizontal, substantially as hereinafter more specifically described and then definitely claimed.

Figure 1 is a perspective view showing a cannery steam-box provided with my improved quick-opening door, the latter being shown in a closed position. Fig. 2 is a similar view showing the door open. Fig. 3 isa side elevation, partly in section, of a modified form of fastening device.

In the drawings like letters of reference indicate corresponding parts in the different figures.

A is the steam box or retort, provided, as

shown, with a truck B, running on suitable.

tracks. As this truck forms no part of my present invention, further description will be unnecessary.

O is the door, loosely hung upon a horizontal hinge-pin D, suitably supported at the top of the steam-box in proximity to the opening E, which the door isintended to close. Around this opening is placed in a suitable groove a strip of packing a to form a seat for the flange 1) around the door.

F are levers pivoted upon the steam-box, preferably upon or in line with the hinge-pin D. The lower ends of these levers are secured to the door, preferably by being in serted in the slotted lugs 0, formed thereon. The upper ends of these levers are provided with counterbalancing-weights G, the center of gravity of the system being so arranged that the door and weights balance only when the door is fully open, so that when the door is closed the weights tend to gently open it to a position just past the horizontal. The weights G are preferably made adjustable upon the levers F by set-screws, as shown, in order that the position of the center of gravity maybe accurately adjusted, as described.

Pivotally connected at the center of the door is the cross-bar H, the ends of which are adapted to engage, respectively, with the pivoted clip-shackle I and the pivoted screwclamp J The latter consists of a slotted link and hand-wheel d, the said wheel having a threaded spindle acting in said slotted link, as shown clearly in Fig. 2, or of a pivoted screw-eyej, engaging a bifurcated end it of the cross-bar H, and a hand-wheel d, screwing upon the spindle of the screw-eye and se curing said bifurcated end, as shown in Fig. 3.

When the door is closed, by engaging the ends of the cross-bar with the clip-shackle and screw-clamp the door may be tightly clamped to its seat by revolving the hand-wheel d of the screw-clamp. The door being loosely piv oted upon the hinge-pin, as shown at ein Figs. 2 and 3, the dooris free to accommodate itself to the packing at, its whole weight being car ried by the hinge-pin, while it is free to move horizontally when clamped up by the handscrew. Thus the loose pivoting and the pivoted connection of the cross-bar renders it possible for me to make the door [it absolutely steam-tight and to insure that it will do so until the packing is entirely worn out, which may then be renewed.

From the above description it will be seen that I have devised a very simple quick-opening door which is as readily closed as opened and which when closed is absolutely tight.

Although I describe my invention as par ticularly adapted for cannery steam boxes or retorts, it will of course be understood that it may be readily adapted to all purposes for which a quick-acting vertically-opening door is desirable.

What I claim as my invention is- 1. A door hinged at its upper edge above an opening in a steam box or retort, in combination with two levers projecting upwardly above said door, one on each side thereof, and weights connected to the upper ends of said levers and counter-balancing the said door, the Weights and levers being arranged to free the sides of the retort or steam-box when the door is opened, substantially as described.

2. A door hinged at its upper edge above an opening in a steam box or retort, in combination with one or more levers of the first order journaled upon the steam-box, connected with the door at their lower ends and provided at their upper ends with counterbalancing-weights, the center of gravity being so adjusted that the system balances, when the door is at or slightly above the horizontal, substantially as and for the purpose specified. 3. A door hinged at its upper edge above an opening in a steam box or retort, in combination with one or more levers of the first order journaled upon the steam-box, connected with the doorat their lower ends and provided at their upper ends with counterbalancing-weights, a cross-bar loosely secured at its center to the center of the door; a pivoted clip-shackle adapted to engage one end of the cross-bar and a pivoted screw-clamp adapted to engage the other, substantially as and for the purpose specified.

4. A door hinged at its upper edge above an openingin a steam box or retort, in combination with one or more levers of the first order journaled upon the steam-box, connected with the door at their lower ends and provided at their upper ends with counterbalancing-weights, the center of gravity being so adjusted that the system balances, when the door is at or slightly above the horizontal, and detachable clamping mechanism for securing the door to close the aforesaid opening, substantially as and for the purpose specified.

Victoria, Canada, July 5, 1899.

JAMES K. RE BEECH. 

